I can only get it to rev out if the starter button is held down, otherwise it just idles as though it's on two cylinders and dies after a few seconds. It's my understanding that the fuel mixture is enriched while the starter button is held down. It seems to sound very nice in the 3k-5k rev range but it doesn't seem to be able to rev all the way to redline.
The bike had 29k miles and sat for 12 years before I bought it. I changed the fuel pump and injectors and rode it for about a year.
Thanks